Stress can cause cancer too and it’s possible stress went up for young people.
HN is social media, so reading "HN causes cancer" wouldn't be bad either.
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2647377
"4) Social media services facilitate the development of social networks online by connecting a profile with those of other individuals and/or groups."
Where are the HN "groups". How does an HN user "connect a profile with those of other invidiuals and/or groups."
"Social media" generally requires users to "log in" and create profiles in order to view the website contents.
By contrast, any web user can read HN without creating a profile and without logging in.
The majority of HN content is not user-generated, e.g., photos and videos created by HN users, it is content from other websites, e.g., news organisations, shared via URL.
Most HN users do not comment or submit. No user-generated content.
Even in the case of "Show HN", the content is almost always hosted by some other website.
"Social media" today is websites with pages that contain advertising purchased by third parties. Where is this advertising on HN.